|Quadrangle map, 1:250,000-scale||MM|
|Quadrangle map, 1:63,360-scale||C-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is at an elevation of about 2900 feet in the East Fork of Glen Creek, about 0.85 mile upstream of its confluence with the West Fork of Glen Creek. The location is probably accurate within 500 feet. The prospect corresponds to number 53 of Bundtzen, Smith, and Tosdal (1976), 255 of Hawley and Associates (1978), 58 of Bundtzen (1981), and 81 of Thornsberry, McKee, and Salisbury (1984).|
Geologic descriptionThe country rocks in the area of this prospect consist of marble and chloritic phyllite of the lower Paleozoic Spruce Creek sequence. A few hundred feet south of the prospect, Spruce Creek rocks are juxtaposed against Birch Creek Schist by a fault that strikes ENE. Tertiary mafic dikes appear to be emplaced along this fault (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2). The deposit consists of a quartz vein that contains arsenopyrite and galena. An adit, now caved, explored the vein in about 1912. No assays are available, but the exploration suggests that the vein was prospected for silver or gold (Bundtzen, Smith, and Tosdal, 1976; Bundtzen, 1981).
|Geologic map unit||(-150.736882318696, 63.5610985269483)|
|Mineral deposit model||Low-sulfide gold-quartz vein or polymetallic vein (Cox and Singer, 1986; models 36a or 22c).|
|Mineral deposit model number||36a or 22c|
|Age of mineralization||The deposit is assumed to be Eocene (see record MM091).|
|Workings or exploration||The vein was explored by an adit in about 1912 (Bundtzen, 1981).|
|Indication of production||Undetermined|
Additional commentsThe prospect is in Denali National Park and Preserve.
Bundtzen, T.K., 1981, Geology and mineral deposits of the Kantishna Hills, Mt. McKinley quadrangle, Alaska: M. S. Thesis, University of Alaska, College, Alaska, 238 p.
Bundtzen, T.K., Smith, T.E., and Tosdal, R.M., 1976, Progress report--Geology and mineral deposits of the Kantishna Hills: Alaska Division of Geological and Geophysical Surveys Open-File Report AOF-98, 80 p., 2 sheets, scale 1:63,360.
Cox, D.P., and Singer, D.A., eds., 1986, Mineral deposit models: U.S. Geological Survey Bulletin 1693, 379 p.
Hawley, C. C. and Associates, Inc, 1978, Mineral appraisal of lands adjacent to Mt. McKinley National Park, Alaska: U. S. Bureau of Mines Open-File Report 24-78, 275 p. (paged by sections).
Thornsberry, V. V., McKee, C. J., and Salisbury, W. G., eds, 1984, 1983 Mineral Resource Studies: Kantishna Hills and Dunkle Mine Areas, Denali National Park and Preserve, Alaska: U. S. Bureau of Mines Open-File Report 129-84. 3 Volumes: v. 1, Text; v. 2, Appendices; v. 3, Maps. Prepared by Salisbury & Dietz, Inc., Spokane, WA.
|Last report date||5/3/2001|